Reamer attachment for die-stocks.



A. G. KUHLMAN.

REAP/[ER ATTACHMENT FOR DIE STOCKS.

APPLICATION FILED 1mm. 1911.

Patented Nov. 21, 1911.

unirnn STATES PATENT OFFICE.

ALBERT o. KUHLMAN, or Youn'esrown. oHIo.

BEAMER .sr'rnonmnnr non nIn-s'roexs.

To all whom it may concern:

Be it lmown that I, ALBnRrG. KUHLMAN,

a citizen of the United States, residing at Youngstown, in the county ofMahoning and State of Ohio, have invented certain new and usefulImprovements in Reamer Attachments for Die-Stocks, of which thefollowing is a specification, reference being had to the accompanyingdrawings.

This invention relates to a reamer attachment for die stocks and has forits primary object to provide simpleand eiiicient means for easily andquickly clampingv the-attachment upon the die stock to support the dlireamer in position for engagement with the Another. object of the.invention resides in the rovislon of an adjustable reamer supportingbar, and means for rigidly securlng said bar upon the die stock wherebyit may be easily and quickly adjusted or re moved.

With the above and other-objects in view, the invention consists of thenovel features of construction, combination and arrangement of partshereinafter fully described and claimed, and illustrated in theaccompanying drawings, in which Figure 1 :is a side elevation partlyinsection of my improved reamer attachment showing the same arrangedupon a die stock of any approved form; Fig. 2 is a section taken on theline 2-2 of Fig. 1 Fig. 3 is a section taken on the line 33 of Fig. 2;and

Fig. 4 isa detail perspective view of the clamping plate.

Referring in detail to the'drawing 5 designates the die stock which maybe of any ordinary or approved form and is provided with the usualhandle receiving socket portion 6. A die 7 is arranged in the stock5 inthe usual manner and retained in position by means of the plate 8. Theseparts are all of common form and construction and it will be understoodthat my improved attachment may be applied to die stocks of other formsthan that disclosed in the drawmg.

The attachment comprises the curved bar 9 having a lateral rectangulararm 9 formed on each of its ends. The plate 10 is rovided on one of itsfaces with a longitudinal recess 11 for engagement upon'the cylindricalportion 6 of the die stock 5. Ajboss or lug 10' is centrally formed uponthe plate 10 and is provided with a rectangular open-' SpeciflcatlonotLetters latent- Patented Nov, 21, 1911, Application filed February 4,1911. serial rt. 608,508.

ing 9 to receive the rectangular lateral extending arm 9" of the'bar 9.A set screw.

10? has'threade'd engagement in the lug 10' and is adapted to beadjusted in the triangular contact upon one of the faces of the arm 9 torigidly secure the same in said lug. A clamping plate 12 which is alsowith alongitudinal recess13 of similar form to the recess 11 of theplate 10 is adapted to provided be arranged upon the under side of thetubular portion 6 of the stock. One end of the clamping plate 12 isslotted as indicated at 16 provided in each end of the plate 10 and asimilar bolt'15 is also disposed through the openin inthe other end ofsaid plate opposite end of theclamping plate 12. Each =14; to receiveone of the clamping bolts 15 which extends through one of the openingsand throug an opening 17 provided-in the of the end walls of the openmg17 are beveled or inclined as indicated at clined..wal1s extending inparallel planes. The opening 16 in the end of the base plate 10 opposedto the'opening 17 of the plate 12 also provided with inclined "end walls16 which are disposed at right angles to the inclined walls 17 of theopening 17. The end wall of the opening-16 in the other end of the baseplate is alsoinclined as indicated at 16'. These inclined walls areprovided to permit of the free movement of the 17' said in:

clamping bolts 15 when they are released.

Upon'these clamping bolts the wing nuts 18 are threaded for engagementwith the under side of the clamping plate 12. When these nuts have been.ad usted on the bolts 1-5 and engaged with the ends of the clampingplate to bind said plate and the plate 10 upon the die stock, the reamersupporting arm or rod sition.

When it is desired to remove the attachment from the die stock, the wingnut 18 upon the bolt 15. which extends through the slot 14 in the endofthe clamping plate. is

loosened so that said bolt may be swung outwardly, the outwardlyinclined walls 16 of the opening in the base late permitting of thisoutward movement ot the bolt. The plate 12 is then allowed to drop, thebolt 15which is disposed through the other end thereofswinging in theother of the openings 16 in the base plate, said clamping plate also moving to a position in angular relation to the bolt 15 by reason of theparallel inclined end walls 17 of the opening 17 .Inthis manner 9 will,be rigidly held in pothe attachment maybe easily and quickly removed oras readily clampedupon the die stock to support the reamer in itsoperative position.

The bar 9 is enlarged intermediate of its ends as indicated at 9 and isprovided with a vertical opening ther'ethrough in which the shank 19 ofthe reaming tool is movably disposed. In the drawing I have shown thistool as-being provided with a fluted head 20 which is of conical formfor engagement in the end of the pipe which is to be reamed. Thisreaming operation is well understood in the art, it being renderednecessary by the bur or rough metal .edge which remains upon the innerperiphery of the pipe when the same is out. In order to properly adjustthe reaming tool inthe end of the bar 9,

saidbar is provided with another opening 21 which extends at rightangles to the ver-- tical opening therein and receives the adjusting nut22 which is threaded upon'the shank 19. Thisshank 19 of the reaming toolmay be of many. different forms, that shown in the drawing beingprovided with an interrupted thread by forming flattened faces onopposite sides of the shank. It will be readily seen that by turning thenut 22 the ,tool may be adjusted. up or down in the bar 9 to properlyposition the conical reaming head 20 thereof. The shank 19 is rigidlylockedinthe bar 9 against longitudinal movement after it has beenadjusted, by

means of the wing nut 23 which is threaded thereon and bears upon theupper surface of said bar.

i .From the foregoing it is thought that the construction and operationof my improved attachment will be readily understood with out requiringany further description.

The device is extremely simple, highly efficient in construction and mayhe manu- 'factured at a low cost.

Bymeans of the device, the reaming tool may be easily and quicklyarranged upon any of the various forms of die stocks, and as readilyremoved therefrom. When properly arranged onthe stock, the clamp willsecurely. and rigidly position the support.- 1ng arm so that there willbe no liability whatever of its movement by vibration. of the parts inthe operation of the stock. The bar 9 may also be adjustedlongitudinallyupon the die stock by simply loosening the set screws 10and moving the rectangular arm 9 of said 'barthrough the lugs 10'.

The said screws are then again tightened to rigidly hold the bar whenthe reamer headchas beenproperly adjusted in the end .thevarious parts,it will be understood that the device is susceptible of numerousmodifications without departing from the essential feature orsacrificlng any of the advantages thereof.

Having thus described my invention,what 1 is claimed is: i

l. The combination with a die stock, of a tool supporting bar, ;a"rectangular arm formed on each end of said bar, clamps for rigidlysecuring the ends of the bar to the die stock, said clamps eachcomprising opposed plates provided with longitudinal recesses to receivethe stock, means arranged in the ends of said plates for rigidlysecuring the same thereon, one of said plates be-- ingprovided with acentral lug having a rectangular opening, one of the rectangular ends ofthe supporting bar being disposed in andmovable upon said opening, andthe set screws .for rigidly securing said bar against 4 longitudinalmovement.

2. The combination of a die stock having lateral extensions, of a'toolsupporting bar having a rectangular arm formed on each end, clamps toadjustably screw the said bar jupon the extensions of the die stock,said O clamps each comprising similar plates pro :vided in theiropposed'faces with longitudinal recesses to receive the extensions offthedie stock, said plates at one of their ends having pivotallyextending angularly dis-' posed openings, a clamping bolt disposedthrough said openings, the other end of one. of the plates having anopen ended slat therein and the end of the opposed plate being providedwith an opening, one of the .under walls of which is inclined, aclamping bolt disposed through said openings and extending through theslot ofthe other plate, 'the angular wall of said opening permittmg Intestimony whereof I hereunto aiiix my no 1 signature in the presence oftwo witnesses.

' ALBERT e.

Witnesses:

T. .1. THOMAS, H. J. KUHLMAN.

